Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from £85

PHX — SEA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in January or February, booked 62 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Sky Harbor Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sky Harbor Intl to Seattle

Thu 10/1215:16 -
Nonstop3h 19m
Thu 10/1219:56 -
Nonstop2h 50m
Deal found 28/10£166
Mon 7/1206:00 -
Nonstop3h 14m
Wed 9/1211:50 -
Nonstop2h 55m
Deal found 29/10£169
Wed 9/1206:00 -
Nonstop3h 14m
Tue 12/116:28 -
Nonstop2h 55m
Deal found 30/10£173
Thu 26/1115:20 -
Nonstop3h 10m
Thu 3/1216:40 -
1 stop5h 00m
Deal found 29/10£174
Fri 20/1106:00 -
Nonstop3h 16m
Mon 23/1120:06 -
Nonstop2h 53m
Deal found 30/10£177
Mon 23/1122:44 -
Nonstop3h 15m
Tue 5/112:00 -
1 stop6h 08m
Deal found 30/10£179
Tue 24/1106:00 -
Nonstop3h 16m
Sat 28/1106:00 -
Nonstop2h 48m
Deal found 29/10£181
Mon 7/1219:27 -
Nonstop3h 23m
Wed 9/1209:12 -
1 stop9h 08m
Deal found 29/10£183
Fri 4/1212:35 -
Nonstop3h 14m
Tue 8/1207:25 -
Nonstop3h 04m
Deal found 29/10£184
Mon 7/1215:10 -
2 stops7h 30m
Tue 8/1216:40 -
1 stop5h 00m
Deal found 26/10£185
Thu 10/1211:09 -
1 stop9h 09m
Thu 31/1220:09 -
1 stop18h 41m
Deal found 29/10£187
Thu 10/1216:50 -
Nonstop3h 15m
Sun 13/1218:25 -
Nonstop2h 50m
Deal found 29/10£188

Find flight deals from Sky Harbor Intl to Seattle

Round-trip from

£160

One-way from

£85

Popular in

July

Cheapest in

January

Average price

£203

Good one-way deal

£243 or less
5/1-19/1
  • 5/1-19/1
  • 2 total stops
  • 19h 28m total
  • Phoenix to Seattle
Southwest
  • Southwest
  • 25/11-31/12
  • Nonstop
  • 3h 15m total
  • Phoenix to Seattle
Highest demand for flights based on searches. 14% potential increase in price (£22 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in October 2026
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl.

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Tue 8/12

08:40-10:58

Nonstop3h 18m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£85

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Tue 24/11

22:55-01:10

Nonstop3h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£85

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Mon 14/12

12:32-14:51

Nonstop3h 19m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£89
Fastest return journey

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Fri 20/11

18:36-20:44

Nonstop3h 08m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£89

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Sat 21/11

17:25-19:35

Nonstop3h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£89

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Tue 5/1

09:30-11:56

Nonstop3h 26m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£89

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Wed 6/1

07:49-18:53

2 stops12h 04m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£95

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Sun 24/1

08:20-10:36

Nonstop3h 16m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£104

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Sun 13/12

22:30-00:45

Nonstop3h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£104

PhoenixSeattle

PHX Phoenix Sky Harbor Intl - SEA Seattle/Tacoma Intl

PHXSEA

Phoenix Sky Harbor Intl

Sun 22/11

06:00-08:10

Nonstop3h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£119

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Sky Harbor Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sky Harbor Intl with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Seattle

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £99). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of £225). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to SEA?

Unlike at midday, when flights are generally more expensive, you can save up to 28% on flights from Phoenix Sky Harbor Intl Airport to Seattle by exploring options for tickets in the afternoon.

How much does it cost for a return flight from Phoenix Sky Harbor Intl Airport to Seattle?

Airfare is typical for this route at the moment.

Phoenix Sky Harbor Intl Airport to Seattle flights typically cost between £115 and £263 in January.
The cheapest return price found within the last 5 days was £160 on Multiple Airlines (5 Jan–19 Jan).

Related info for your journey

  • What airport do you fly into for flights to Seattle from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 14 inbound flights from Phoenix Sky Harbor Intl per day. 0 airlines have flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Airlines like Southwest, Delta, and Alaska Airlines fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h 10m. The time it takes to get you to your destination is usually consistent. Phoenix Sky Harbor Intl Airport and Seattle are separated by a distance of 1107 mi. Generally, flights for this route are direct.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Seattle?

    Consider Atlas Air (100%), Korean Air (94%) or WestJet (93%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Seattle.

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Seattle?

    While on average a flight from Phoenix Sky Harbor Intl Airport to Seattle is generally £330, our data shows the cheapest flight currently is £240. When looking at the most popular route, (Phoenix Sky Harbor Intl - Seattle/Tacoma Intl), you can expect to pay £323 for that flight.

  • Can I find deals for flights from Sky Harbor Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Seattle.

  • Can I find deals for business class flights from Sky Harbor Intl to Seattle?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £99). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of £225). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Sky Harbor Intl today and book when prices fit your budget.

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